Environmental Science 1021F/G Lecture Notes - Lecture 8: Transpiration, Aquaponics, Overfishing
4 Oct 2017
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Document Summary
Food & soil resources: food production, global & canada, some ways to increase food supply, environmental issues affecting soil, soil degradation by erosion, desertification, salinization and water logging, solutions to environmental issues affecting soil. Agroecosystems: human influenced ecosystem, therefore people do not value it as much, meanwhile there are species thave have adapted. Influenced by humans, still important, many species have adapted for these ecosystems, to complete or partially rely on systems within the ecosystem. Plants pull out carbon from atomosphere, they are photosynthesizers. Industrial and plantation agriculture make up 25 percent of agriculture, and feeds 80% of people. Systems that provide food: croplands (77%) } typical meaning of agriculture: rangelands (16%, growing the most out of the 3, ocean fisheries (7%, technology continues ability to produce food (depth finders, etc) **growing meat costs much more than growing plants. Technological advances have contributed to dramatic increases in all three systems.
